Modélisation et évaluation environnementale d’une unité de captage de CO₂ intégrée à un procédé industriel

Abstract : Limiting carbon dioxide (CO2) emissions is a major global issue, particularly for the energy, chemical and metallurgical industries. To this end, CO2 capture technologies have been developed in recent decades. In this study, we focused on three types of CO2 capture technologies: chemical absorption by MEA, membrane separation and activated carbon adsorption. The CO2 considered is emitted by a coal-fired power station and then directly valorized within a manufacturing process on the same site. The objective of this study was to quantify the environmental benefits of installing a CO2 capture technology in comparison to the current configuration, without CO2 capture. Our approach combined process modeling and life cycle assessment. The methodology adopted was to model the complete system (the power plant, the manufacturing process and the various capture units) using a flowsheeting software (Aspen Plus), then to determine the environmental impacts by LCA. The results show that the MEA chemical adsorption process is strongly penalized by the use of the solvent, both regarding the energy consumption and the environmental impacts. The membrane process exhibits significant environmental impacts, despite a much lower energy consumption, due to the massive use of polymers (membrane materials). Finally, the activated carbon adsorption process has lower environmental impacts than the other two processes in the vast majority of impact categories.
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https://hal.univ-lorraine.fr/tel-02351229
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Submitted on : Wednesday, November 6, 2019 - 12:28:29 PM
Last modification on : Thursday, November 7, 2019 - 1:41:02 AM

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  • HAL Id : tel-02351229, version 1

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Hélène Anselmi. Modélisation et évaluation environnementale d’une unité de captage de CO₂ intégrée à un procédé industriel. Science des matériaux [cond-mat.mtrl-sci]. Université de Lorraine, 2019. Français. ⟨NNT : 2019LORR0080⟩. ⟨tel-02351229⟩

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